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Fantastic video with super thorough explanation! I have a Df which I use for the Pre-ai lenses but would love to be able to use my 135 QC 2.8, 85 -H 1.8 and the same 35mm-O f2 as yours along with the D700 & D3s. This video might be the one convincing me about trying it out! If it's not too much to ask it would be wonderful to see a picture of your conversion of your 85mm lens. Regarding making the difficult cut from f 1.8 to 2, do you have any advise on where to start the cut without messing it up?

Chemtools Label & Adhesive Remover does this brilliantly

I have a 85mm like you have and it claimed it wasn’t altered to AI conversion but I think it was. I’m not sure though if they did it right, where is the start point on that lens? Mine is showing a little after the f8 and I feel like they didn’t go far enough.

And the WD40 is not effective?

❤

Thanks for the tip. I used Diggers Methylated Spirits (95% ethanol content) on cotton pads and worked my way through it. Worked like a charm. I've also used WD40 which worked well on sticky rubberised coatings but that stuff obliterates the coating and leaves the plastic alone (also stinks).

Hi there. I have an old Komuranon 925 Zoom Lens 1:4.5 f=90-250 mm I want to convert for my standard F Mount camera. I have watched lots of vids done on 50 mm saying to commence the groove at F8... Is this the same for all lenses or does it need to be adjusted for each different lens. Thanks.

I just resurrected my Nikon F70 from 1995 and have this issue with the back of it. Hand sanitizer is something I haven't tried but, will now .. thank you. I've tested isopropyl alcohol (50% - maybe a higher alcohol content would work better) and nail polish remover (acetone free) on small spots and of the two the nail polish remover is much more effective that the alcohol. But, I'm going to try the hand sanitizer as well. Cheers!

Did this exact thing with a toothbrush and washing powder.

Great help

Bro - just use Isopropyl alcohol 70%. The kind you get from the drug store and any sort of delivery device. I've used cotton swabs to do this in plastic that's covered by other rubber. You don't need to scrub. The alcohol cleans it all away nice and simple.

I have found Iso alcohol works really well. A jellied alcohol would be nice to let it soak in. I'll try this on my next sticky find. Thanks.

Hello I always admired this legend. Now it's in my home with 130k actuations and still working perfectly. This rubber part replacement is the next step I will do (after focus adjustment with my fabulous 135/2). Still fantastic output what provides

Good explanation, thank you! Did you change the focusing screen on your D700 for easier manual focusing? If so, where did you get one? Thank you very much!

Thank you so much for your in detail instruction. I'm planning to modify a few of old Non-Ai lens also. Hope I can do as well as you did.

Awesome !! I just purchased a Nikon D700 on marketplace from a woman who used it as a backup. She said when she ordered it in 2008 it was back ordered 6 months. Only came out of her pelican case 3 times in 15 yrs. It’s perfect !! 1231 shutter clicks $300 w/ 50mm f1.4 lens Hope mine last as long as yours 👊

I appreciate your attention. You seem to be a nice person. Love from Brazil.

Will this be an issue if I'm trying to use this lens with an adapter onto a modern mirrorless camera?

love it i have a 105 mm 2,5 non ai can i convert it to

Mr C, It looks great. I'm glad you made this video. I have a D70s that had a sticky back. I used 99% Isopropyl alcohol to remove the stickiness. It took about 4 applications. I then restored the sheen by using Armor-All wipes. Ten years later, the camera still looks and feels like new.

I just did something similar with my father’s old 35mn and 50mm pre-ai lenses. Very nice and informative video. Inspiring.

Thank you very much!! 👍👍

Very nice demonstration. As you emphasized, the alignment of the cut by f11 is critical for meter coupling,

So 50 or 70% isopropyl alcohol will work just as well.

Maybe it’s better to remove the Film Door first?

Spray wd40 on a cloth rag and rub with your finger.

thank you!

You have solved a "sticky" problem that has bothered me for years. Both my D80 and D90 have had sticky surfaces that have frustrated me. Your instructional and informational video has solved the problem. They are almost completely free of stickiness. I thank you and appreciate your video.

What determines where on the aperture ring you start the grinding and where you end it? It's different for different lenses, but why? You said the distance ground off was 60 mm, but it looks more like 30 or 35 mm. Is that measured as the crow flies or around the circumference of the aperture ring?

Useful video, thank you! My two cents of advice: I would hesitate to use greasy lubricants particularly on plastics because they may degrade the plastic. In addition, the grease itself may degrade with time and become sticky. The best lubricant for your application I believe would be graphite. Sprinkle some on the surface(s) and rub it coat these surfaces and it should be good. Graphite is the best lubricant for electronic components and locks.

Thanks for the tip! ❤

I'm having issues removing the aperture ring as in your video at 7min. It doesn't slide right off after I remove all the screws from the rear and also the one at the side. Any advise?

Thanks! It's so good and simply to make lens. Спасибо большое Вам за информацию в перестройке линзы. Have you a nice day

I love it! Great video!

Many thanks for your really helpful video!! 🙏👍

Thank you for the video, helpful

thanks!!!! Eos500N is new again!

Cif (in the UK or I think it's called Scrub Daddy in other countries) orange kitchen degreaser sprayed onto a kitchen towel wipe over as well as using the toothbrush is actual a far quicker method.

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Thank you. will do it in a couple of days. So I can use this lens on my Nikon d700

Worked like a charm. Mine was so sticky you did not need a strap! Many thanks. For what it is worth I rubbed in a bit of ArmorAll after the cleaning. Seemed to work ok and gave a new luster to the camera back and covering.

make a video on cleaning like new camera. there is no any good video available on internet for cleaning of fabric portion of the camera.

Quick question, what was the alcohol content of your hand sanitizer? Great video by the way. I used isopropyl on my Canon 50E grip worked a treat, but I have an Olympus E20N with a sticky grip so I'm gonna try your method. Regards Rob.

I love learning new things. Thank you. If I ever have a sticky camera in future I will remember you.

Be careful. When I wiped the stuff off, the letter L also went away.

Did this exact thing with regular hand sanitizer, gloves , toothbrush & fabric on a very old canon 300D which had been sitting in a camera bag for over a decade, extremely sticky and hands would come away black . Didn't even need the toothbrush, was extremely useful to have gloves on & very easy to clean the camera , the sanitizer worked like a charm ! Thanks so much for this video .

Thank you! For not so careful people who put sanitaizer around the controls, it is better to remove the battery from the camera and leave it for a some time at the end.

i dealt with a 'Mr C' on kijiji; nice guy, he was. i wonder if this is the same person.

Try WD40 or Sugar Soap.. both worked for me..

Have ordered a Nippon Kogaku 35mm f/2.8. Waiting for it. This video will help me in getting it to work with my cameras. Can't wait to try it out 🙂 Edit: Got my Nippon Kogaku S Auto 35mm f/2.8 today. It is one of those rare lenses in which the scalloped aperture ring goes under the aperture index tab on the camera instead of pressing against it. I also checked by pushing a piece of newspaper between the aperture index tab and the aperture ring after mounting the lens. It slides freely. So, there’s absolutely no contact. Luckily, there’s no filing needed. I just had to remove the metering fork on the aperture ring as it was pushing the aperture index tab on the camera too far with the result that it was showing as starting from f11 on my D7000. I then glued on a plastic tab on to the aperture ring right at the point from where we would normally start filing an f/2.8 lens (f/11 + 2/3). Works as it should. Anyway, thanks for your video. It was quite informative.